多孔n-HA／PA-6复合材料的制备及性能  

Fabrication and performances of porous n-HA/PA-6 composite

作　　者：李鸿[1] 李玉宝[1] 严永刚[1] 王华楠[1] 王明波[1] 程琳[1] 

机构地区：[1]四川大学纳米生物材料研究中心分析测试中心

出　　处：《复合材料学报》2008年第1期64-68,共5页Acta Materiae Compositae Sinica

基　　金：国家科技部973国际合作项目(2004CB720604)

摘　　要：采用注塑方法制备了多孔纳米磷灰石／聚酰胺-6（n—HA／PA-6）复合材料，采用SEM、XRD、IR、力学性能测试考察了多孔材料的性能。结果发现：多孔纳米磷灰石／聚酰胺-6复合材料的孔隙分布均匀，贯通性良好，孔的尺寸约为100～700μm，平均孔径约300～500μm，大孔壁上有丰富的微孔；所得多孔复合材料的孔隙率可控，总孔隙率最高可达88．6％；多孔材料的总孔隙率降低，则开孔率随之降低；多孔纳米磷灰石／聚酰胺-6复合材料的抗压强度为1．1～15．6MPa，压缩模量为0．4～1．4GPa；在总孔隙率相近的条件下，多孔材料的抗压强度随n—HA质量分数增加而升高；发泡剂和发泡过程对组成纳米磷灰石／聚酰胺-6复合材料的两组元材料的性质和结构无影响。这种多孔材料可望作为人体非承重部位的植入骨修复体和组织工程支架使用。The porous n-HA/PA-6 composite was developed by the injection molding technique, and its performances were investigated by SEM, XRD, and IR. The results indicate that the obtained porous composite has interconnected and uniformly distributed pores, and the diameters of pores range from about 100 μm to 700 μm with the average diameters between 300 μm and 500 μm. Many micropores can be observed on the wall of macropores. The total porosity of the porous composite could be controlled by adjusting the processing parameters, and can reach as high as 88.6 %. The interconnected porosity decreases with the decrease of total porosity. Additionally, the porous composite has good compressive strength （1.1～15.6 MPa） and compressive modulus （0.4～4 GPa）, which increa- ses with the growth of the mass fractions of n- HA in the composite. The structures and properties of HA and PA- 6 in the n-HA/PA-6 composite can not be affected by the foamer and the process of pores formation. This porous composite is a promising material for tissue engineering scaffold materials and non-load bearing bone implants.

关 键 词：n—HA/PA-6复合材料 多孔材料 孔结构 孔隙率 压缩性能 

分 类 号：TB332[一般工业技术—材料科学与工程] TB39